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|a CMS Collaboration
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|a Massachusetts Institute of Technology. Department of Physics
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|a Massachusetts Institute of Technology. Laboratory for Nuclear Science
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|a Roland, Gunther M
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|a Stephans, George S. F.
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|a Stoeckli, Fabian
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|a Sumorok, Konstanty C
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|a Velicanu, Dragos Alexandru
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|a Wolf, Roger
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|a Wyslouch, Boleslaw
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|a Yang, Ming
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|a Yilmaz, Yetkin
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|a Yoon, A. S.
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|a Zanetti, Marco
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|a Wyslouch, Victoria
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|a Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at √s = 7 TeV
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|b Springer Berlin Heidelberg,
|c 2018-06-07T13:07:45Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/116166
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|a The production of a Z boson, decaying into two leptons and produced in association with one or more b jets, is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV. The data were recorded in 2011 with the CMS detector and correspond to an integrated luminosity of 5 fb[superscript -1]. The Z(ℓℓ) + b-jets cross sections (where ℓℓ = μμ or ee) are measured separately for a Z boson produced with exactly one b jet and with at least two b jets. In addition, a cross section ratio is extracted for a Z boson produced with at least one b jet, relative to a Z boson produced with at least one jet. The measured cross sections are compared to various theoretical predictions, and the data favour the predictions in the five-flavour scheme, where b quarks are assumed massless. The kinematic properties of the reconstructed particles are compared with the predictions from the MadGraph event generator using the pythia parton shower simulation. [Figure not available: see fulltext.] Keywords: Jet physics; Hadron-Hadron Scattering
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|a Article
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|t Journal of High Energy Physics
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